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8. 9 m .27 2 V. o N d nu l n e t a DI N. W o R B H. W 0. 3 5 M 6 nu N FL00 R.

(Application filed Mar. 23, 1897.)

(No Model.)

r II III 2 Sheets-Sheet l.

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A770 EY.

No. 6|4,53o.

Patented Nov. 22, |898. w. H. BROWN.

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(Application filed Mar. 23, 1897.)

2 Sheets-Sheet 2.

(No Model.)

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"Nrrnn STATES PATENT Fries.

FLooR;

SPECIFICATION forming part of Letters Patent No. 614,530, dat@ November22, 189e.

Application iiled March 23, 1897. Serial No. 628,824. (No model.)

To all whom it may concern.-

Beit known that I, WILLIAM H. BROWN, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certain new and useful Improvements in Floors, of whichthe following is a specification.

The principal object of my invention is to produce a composite structureat a small expense which shall take the place and serve the purpose ofthe ordinary heavy metal floorbeams in architectural construction. Indoing this I form the lower edge of the structure of'metal and provideit with numerous interlocking points or devices and then build upon themetal so formed a cement or concrete upper portion. The metal being, asis well known, very strong to resist tensile strains, and the concretebeing equally strong to resist compression, while very much cheaper incost than metal, besides being possessed of high combustion-resistingqualities, the composite structure embodies in a high degree theadvantages while avoiding vthe disadvantages of both materials, besidessecuring comparative inexpensiveness.

Further objects are to provide a means for securing the flooring-stripsstrongly and securely to the beams, means for adj Listing saidHoor-strips, and to provide convenient spaces for pipes, wires, dac.,comprised in the lighting or other equipment.

Referring to the accompanying drawings, which are made a part hereof andon which similar letters of reference indicate similar parts, Figure lis a perspective view illustrating an architectural floor constructionembodying my said invention; Fig. 2, a similar view illustrating analternative form of construction; Fig. 3, a transverse sectional viewillustrating the methodof constructing the variety of floor shown inFig. 1; Fig. 4, a similar View illustrating the method of constructingthe variety of floor shown in Fig. 2; Fig. 5, a longitudinal sectionalview (t. e., longitudinal of one of the beams) as seen from the dottedline 5 5 in Fig. 1, and Figs. 6 and 7 fragmentary perspective views oftwo forms of metal members adapted for use in the construction of beamsembodying my invention. a

In said drawings the portions marked A represent the metal members; B,the concrete members; C, an expanded-metal sheathing, which is laid overthe licor-beams to form the lower side of the floor; D, a body ofconcrete laid upon said expanded metal; E, wooden strips laid upon orembedded in said concrete; F, a wooden floor laid upon said strips, andG, G', and H casing-boards, which are used during the building ofthefloor as sides of molds, whereby the beams and ceiling are given thedesired shape.

The metal beams A are preferably channelbeams, as shown in most placesin the drawings, but may be T-beams, as shown in Fig. 7 These arearranged in use with the flanges extending upwardly and the smoothsurface on the under side. Through the iianges are extended numeroushorizontal pins or bolts d, around which the concrete in being placed inposition will pass and which when the concrete is set will be firmlyembedded therein, forming interlocking or engaging points or devices andstrongly uniting the metal and concrete members of the completed beam.In the structure illustrated in Fig. l these transverse pins a extendthrough the flanges of the iron beams and project somewhat beyond thesurfaces thereof. Upon these projecting ends I hang links Z, which carryrods r, and these in turn support the lathing to which the plastering isapplied. Said pins or rods co thus serve a double purpose, both enteringintothe construction of the beams and forming a means for supporting theplastering. In addition to these transverse pins ct I prefer also toinsert vertical pins or bolts b, which pass up into the concrete, asshown, and which are preferably provided with tapered heads adapted tolit into countersunk holes in the under side of the metal members.These, as they extend up a considerable distance into the concrete, aidconsiderably in the matter of securing the members strongly together.They may or may not be provided with nuts or collars on the upper ends;but manifestly such nuts or collars are of some advantage. I also employat suitable intervals vertical bolts e, which are like the bolts b,except that they are of greater length, and which at the upper ends passthrough the woodenl strips IOO and provided at a p'oiit above its upperhorizontal face with a number of engaging pins, as a, and a concretemember B placed on the upper side of the metal memberA and formedthereon While yet plastic to embrace the engaging points or pins of thesaid flanged metal member and to form When hardened the upper portion ofthe beam, whereby the metal and concrete are firmly united and so 1ocombined as to utilize the best strength of both, all substantially asshown and described and for the purposes set forth. l

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 20th day of March; A. D. 1897.

WILLIAM r-i. BROWN. [n e] Witnesses:

CHESTER BRADFORD, JAMES A. WALSH

